Please let us know how the jumping RX to 3V3 line works out. If I recall correctly, the RX line is pulled down to ground which didn't make sense to me as generally an asserted RX state is considered idle (if memory serves me correctly). What resistance are you using? Modifying u-boot is not something I want to do if I don't have to.
On Wednesday, June 3, 2015 at 2:04:29 PM UTC-5, AQG Chris wrote: > > We are dealing with the same issue - we found another complaint of the > same thing, in which the user identifies phantom characters on the UART > during startup causing the board to go into u-boot. If you don't have a > display attached or a serial connection available, u-boot looks a lot like > a solid power LED and nothing else. link to that thread: > http://andicelabs.com/2014/07/beaglebone-black-boot-issues/ > > That user apparently was able to modify u-boot to look for a certain > character instead of any keystroke. In the limiting testing I've done, it > seems that the problem also doesn't occur if you have a serial connection > hooked up to UART0. I'm now experimenting with jumping the RX line of > UART0 to 3.3v, and so far haven't had the issue again. > >> >> -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
